/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:31:19,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:31:19,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:31:19,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:31:19,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:31:19,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:31:19,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:31:19,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:31:19,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:31:19,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:31:19,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:31:19,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:31:19,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:31:19,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:31:19,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:31:19,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:31:19,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:31:19,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:31:19,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:31:19,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:31:19,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:31:19,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:31:19,966 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:31:19,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:31:19,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:31:19,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:31:19,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:31:19,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:31:19,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:31:19,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:31:19,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:31:19,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:31:19,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:31:19,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:31:19,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:31:19,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:31:19,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:31:19,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:31:19,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:31:19,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:31:19,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:31:19,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:31:20,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:31:20,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:31:20,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:31:20,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:31:20,004 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:31:20,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:31:20,004 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:31:20,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:31:20,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:31:20,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:31:20,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:31:20,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:31:20,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:31:20,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:31:20,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:31:20,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:31:20,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:31:20,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:31:20,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:31:20,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:31:20,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:31:20,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:31:20,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:31:20,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:31:20,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:31:20,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:31:20,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:31:20,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:31:20,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:31:20,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:31:20,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:31:20,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:31:20,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:31:20,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:31:20,320 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:31:20,320 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-21 16:31:20,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c2d71212/41b5381e88174bd897e347e25a84f748/FLAGeac1411be [2020-08-21 16:31:20,782 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:31:20,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_8-2.c [2020-08-21 16:31:20,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c2d71212/41b5381e88174bd897e347e25a84f748/FLAGeac1411be [2020-08-21 16:31:21,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c2d71212/41b5381e88174bd897e347e25a84f748 [2020-08-21 16:31:21,180 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:31:21,182 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:31:21,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:31:21,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:31:21,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:31:21,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c46eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21, skipping insertion in model container [2020-08-21 16:31:21,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:31:21,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:31:21,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:31:21,433 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:31:21,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:31:21,466 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:31:21,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21 WrapperNode [2020-08-21 16:31:21,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:31:21,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:31:21,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:31:21,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:31:21,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... [2020-08-21 16:31:21,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:31:21,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:31:21,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:31:21,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:31:21,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:31:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:31:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:31:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-08-21 16:31:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-08-21 16:31:21,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:31:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:31:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:31:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-08-21 16:31:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-08-21 16:31:21,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:31:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:31:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:31:21,849 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:31:21,849 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 16:31:21,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:31:21 BoogieIcfgContainer [2020-08-21 16:31:21,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:31:21,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:31:21,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:31:21,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:31:21,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:31:21" (1/3) ... [2020-08-21 16:31:21,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd343d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:31:21, skipping insertion in model container [2020-08-21 16:31:21,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:31:21" (2/3) ... [2020-08-21 16:31:21,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd343d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:31:21, skipping insertion in model container [2020-08-21 16:31:21,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:31:21" (3/3) ... [2020-08-21 16:31:21,862 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_8-2.c [2020-08-21 16:31:21,874 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:31:21,881 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:31:21,894 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:31:21,918 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:31:21,918 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:31:21,919 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:31:21,919 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:31:21,919 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:31:21,919 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:31:21,919 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:31:21,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:31:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-08-21 16:31:21,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-21 16:31:21,942 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:21,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:21,944 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:21,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:21,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-08-21 16:31:21,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:21,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757716415] [2020-08-21 16:31:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:31:22,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757716415] [2020-08-21 16:31:22,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:31:22,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:31:22,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636036889] [2020-08-21 16:31:22,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:31:22,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:22,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:31:22,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:31:22,182 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-08-21 16:31:22,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:22,425 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-08-21 16:31:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:31:22,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-21 16:31:22,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:22,442 INFO L225 Difference]: With dead ends: 44 [2020-08-21 16:31:22,442 INFO L226 Difference]: Without dead ends: 30 [2020-08-21 16:31:22,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:31:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-21 16:31:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-21 16:31:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 16:31:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-21 16:31:22,497 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-08-21 16:31:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:22,498 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-21 16:31:22,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:31:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-21 16:31:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-21 16:31:22,500 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:22,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:22,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:31:22,501 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:22,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-08-21 16:31:22,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:22,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159113289] [2020-08-21 16:31:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:31:22,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159113289] [2020-08-21 16:31:22,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:31:22,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:31:22,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506306994] [2020-08-21 16:31:22,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:31:22,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:22,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:31:22,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:31:22,569 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-08-21 16:31:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:22,644 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-08-21 16:31:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:31:22,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-08-21 16:31:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:22,647 INFO L225 Difference]: With dead ends: 36 [2020-08-21 16:31:22,647 INFO L226 Difference]: Without dead ends: 32 [2020-08-21 16:31:22,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:31:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-21 16:31:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-08-21 16:31:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-21 16:31:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-08-21 16:31:22,658 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-08-21 16:31:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:22,659 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-08-21 16:31:22,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:31:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-08-21 16:31:22,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 16:31:22,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:22,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:22,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:31:22,662 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:22,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:22,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-08-21 16:31:22,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:22,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072613656] [2020-08-21 16:31:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:31:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:31:22,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072613656] [2020-08-21 16:31:22,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:22,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 16:31:22,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107370066] [2020-08-21 16:31:22,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:31:22,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:22,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:31:22,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:31:22,804 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-08-21 16:31:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:22,895 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-08-21 16:31:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 16:31:22,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-08-21 16:31:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:22,898 INFO L225 Difference]: With dead ends: 58 [2020-08-21 16:31:22,898 INFO L226 Difference]: Without dead ends: 34 [2020-08-21 16:31:22,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:31:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-21 16:31:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-21 16:31:22,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-21 16:31:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-08-21 16:31:22,910 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-08-21 16:31:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:22,911 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-08-21 16:31:22,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:31:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-08-21 16:31:22,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 16:31:22,913 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:22,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:22,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:31:22,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:22,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:22,914 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-08-21 16:31:22,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:22,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767379385] [2020-08-21 16:31:22,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:22,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 16:31:23,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767379385] [2020-08-21 16:31:23,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:23,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 16:31:23,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298277749] [2020-08-21 16:31:23,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:31:23,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:23,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:31:23,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:31:23,035 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-08-21 16:31:23,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:23,237 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2020-08-21 16:31:23,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:31:23,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-21 16:31:23,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:23,242 INFO L225 Difference]: With dead ends: 54 [2020-08-21 16:31:23,242 INFO L226 Difference]: Without dead ends: 50 [2020-08-21 16:31:23,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-21 16:31:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-08-21 16:31:23,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-08-21 16:31:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-21 16:31:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-08-21 16:31:23,257 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 27 [2020-08-21 16:31:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:23,258 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-08-21 16:31:23,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:31:23,258 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-08-21 16:31:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-21 16:31:23,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:23,261 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:23,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:31:23,261 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:23,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:23,262 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-08-21 16:31:23,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:23,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052732146] [2020-08-21 16:31:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:31:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 16:31:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:31:23,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052732146] [2020-08-21 16:31:23,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:23,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-21 16:31:23,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242721038] [2020-08-21 16:31:23,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 16:31:23,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:23,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 16:31:23,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 16:31:23,413 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2020-08-21 16:31:23,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:23,484 INFO L93 Difference]: Finished difference Result 94 states and 142 transitions. [2020-08-21 16:31:23,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:31:23,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-08-21 16:31:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:23,487 INFO L225 Difference]: With dead ends: 94 [2020-08-21 16:31:23,487 INFO L226 Difference]: Without dead ends: 52 [2020-08-21 16:31:23,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:31:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-21 16:31:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-08-21 16:31:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 16:31:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2020-08-21 16:31:23,500 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 39 [2020-08-21 16:31:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:23,501 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2020-08-21 16:31:23,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 16:31:23,501 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2020-08-21 16:31:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-21 16:31:23,503 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:23,504 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:23,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:31:23,504 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:23,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:23,505 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-08-21 16:31:23,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:23,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1835840438] [2020-08-21 16:31:23,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-21 16:31:23,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1835840438] [2020-08-21 16:31:23,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:23,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 16:31:23,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871484530] [2020-08-21 16:31:23,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:31:23,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:23,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:31:23,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:31:23,668 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand 8 states. [2020-08-21 16:31:23,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:23,779 INFO L93 Difference]: Finished difference Result 103 states and 158 transitions. [2020-08-21 16:31:23,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 16:31:23,780 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-08-21 16:31:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:23,782 INFO L225 Difference]: With dead ends: 103 [2020-08-21 16:31:23,782 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 16:31:23,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:31:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 16:31:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-08-21 16:31:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 16:31:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2020-08-21 16:31:23,796 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 40 [2020-08-21 16:31:23,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:23,796 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2020-08-21 16:31:23,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:31:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2020-08-21 16:31:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 16:31:23,798 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:23,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:23,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:31:23,799 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:23,800 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-08-21 16:31:23,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:23,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530573084] [2020-08-21 16:31:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-21 16:31:23,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530573084] [2020-08-21 16:31:23,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:23,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 16:31:23,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415068420] [2020-08-21 16:31:23,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:31:23,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:23,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:31:23,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:31:23,911 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand 8 states. [2020-08-21 16:31:24,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:24,105 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-08-21 16:31:24,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:31:24,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-08-21 16:31:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:24,109 INFO L225 Difference]: With dead ends: 86 [2020-08-21 16:31:24,109 INFO L226 Difference]: Without dead ends: 82 [2020-08-21 16:31:24,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:31:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-21 16:31:24,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 79. [2020-08-21 16:31:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-08-21 16:31:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 118 transitions. [2020-08-21 16:31:24,129 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 118 transitions. Word has length 41 [2020-08-21 16:31:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:24,129 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 118 transitions. [2020-08-21 16:31:24,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:31:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 118 transitions. [2020-08-21 16:31:24,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 16:31:24,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:24,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:24,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 16:31:24,134 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:24,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:24,135 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-08-21 16:31:24,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:24,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822206735] [2020-08-21 16:31:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 16:31:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 16:31:24,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822206735] [2020-08-21 16:31:24,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:24,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-21 16:31:24,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932337053] [2020-08-21 16:31:24,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:31:24,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:24,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:31:24,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:31:24,362 INFO L87 Difference]: Start difference. First operand 79 states and 118 transitions. Second operand 8 states. [2020-08-21 16:31:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:24,516 INFO L93 Difference]: Finished difference Result 167 states and 288 transitions. [2020-08-21 16:31:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:31:24,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-08-21 16:31:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:24,519 INFO L225 Difference]: With dead ends: 167 [2020-08-21 16:31:24,520 INFO L226 Difference]: Without dead ends: 94 [2020-08-21 16:31:24,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:31:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-21 16:31:24,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2020-08-21 16:31:24,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-21 16:31:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 134 transitions. [2020-08-21 16:31:24,553 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 134 transitions. Word has length 54 [2020-08-21 16:31:24,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:24,554 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 134 transitions. [2020-08-21 16:31:24,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:31:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 134 transitions. [2020-08-21 16:31:24,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-21 16:31:24,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:24,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:24,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 16:31:24,557 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:24,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:24,558 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-08-21 16:31:24,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:24,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982257868] [2020-08-21 16:31:24,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 16:31:24,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982257868] [2020-08-21 16:31:24,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:24,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:31:24,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880783396] [2020-08-21 16:31:24,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:31:24,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:24,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:31:24,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:31:24,709 INFO L87 Difference]: Start difference. First operand 88 states and 134 transitions. Second operand 10 states. [2020-08-21 16:31:24,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:24,921 INFO L93 Difference]: Finished difference Result 188 states and 331 transitions. [2020-08-21 16:31:24,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-21 16:31:24,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-08-21 16:31:24,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:24,923 INFO L225 Difference]: With dead ends: 188 [2020-08-21 16:31:24,924 INFO L226 Difference]: Without dead ends: 109 [2020-08-21 16:31:24,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:31:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-21 16:31:24,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2020-08-21 16:31:24,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 16:31:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2020-08-21 16:31:24,942 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 55 [2020-08-21 16:31:24,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:24,943 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2020-08-21 16:31:24,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:31:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2020-08-21 16:31:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-21 16:31:24,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:24,946 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:24,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 16:31:24,946 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:24,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:24,947 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 2 times [2020-08-21 16:31:24,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:24,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816359473] [2020-08-21 16:31:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:24,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-08-21 16:31:25,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816359473] [2020-08-21 16:31:25,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:25,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:31:25,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238171157] [2020-08-21 16:31:25,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:31:25,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:25,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:31:25,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:31:25,179 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand 12 states. [2020-08-21 16:31:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:25,585 INFO L93 Difference]: Finished difference Result 199 states and 354 transitions. [2020-08-21 16:31:25,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 16:31:25,586 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-08-21 16:31:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:25,588 INFO L225 Difference]: With dead ends: 199 [2020-08-21 16:31:25,588 INFO L226 Difference]: Without dead ends: 86 [2020-08-21 16:31:25,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-08-21 16:31:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-21 16:31:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2020-08-21 16:31:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-21 16:31:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 93 transitions. [2020-08-21 16:31:25,600 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 93 transitions. Word has length 82 [2020-08-21 16:31:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:25,600 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 93 transitions. [2020-08-21 16:31:25,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:31:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 93 transitions. [2020-08-21 16:31:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-21 16:31:25,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:25,602 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:25,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 16:31:25,603 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2119203654, now seen corresponding path program 2 times [2020-08-21 16:31:25,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:25,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1782704534] [2020-08-21 16:31:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 16:31:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:25,844 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-08-21 16:31:25,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1782704534] [2020-08-21 16:31:25,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:25,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 16:31:25,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823918351] [2020-08-21 16:31:25,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 16:31:25,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:25,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 16:31:25,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-21 16:31:25,847 INFO L87 Difference]: Start difference. First operand 71 states and 93 transitions. Second operand 10 states. [2020-08-21 16:31:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:26,051 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2020-08-21 16:31:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 16:31:26,052 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-08-21 16:31:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:26,053 INFO L225 Difference]: With dead ends: 142 [2020-08-21 16:31:26,053 INFO L226 Difference]: Without dead ends: 78 [2020-08-21 16:31:26,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:31:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-21 16:31:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-21 16:31:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-21 16:31:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2020-08-21 16:31:26,063 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 110 [2020-08-21 16:31:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:26,064 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2020-08-21 16:31:26,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 16:31:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2020-08-21 16:31:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-21 16:31:26,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:26,067 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 10, 10, 10, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:26,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 16:31:26,068 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:26,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1263382818, now seen corresponding path program 3 times [2020-08-21 16:31:26,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:26,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728273969] [2020-08-21 16:31:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:26,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 16:31:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 16:31:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:26,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-08-21 16:31:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 133 proven. 373 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2020-08-21 16:31:26,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728273969] [2020-08-21 16:31:26,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:26,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 16:31:26,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338927018] [2020-08-21 16:31:26,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 16:31:26,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:26,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 16:31:26,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-08-21 16:31:26,570 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand 15 states. [2020-08-21 16:31:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:27,149 INFO L93 Difference]: Finished difference Result 184 states and 282 transitions. [2020-08-21 16:31:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 16:31:27,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 192 [2020-08-21 16:31:27,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:27,152 INFO L225 Difference]: With dead ends: 184 [2020-08-21 16:31:27,152 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 16:31:27,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=675, Unknown=0, NotChecked=0, Total=812 [2020-08-21 16:31:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 16:31:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-08-21 16:31:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 16:31:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 133 transitions. [2020-08-21 16:31:27,165 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 133 transitions. Word has length 192 [2020-08-21 16:31:27,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:27,166 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 133 transitions. [2020-08-21 16:31:27,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 16:31:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 133 transitions. [2020-08-21 16:31:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 16:31:27,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:27,169 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 8, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:27,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 16:31:27,170 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:27,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash -2102107778, now seen corresponding path program 1 times [2020-08-21 16:31:27,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:27,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090449841] [2020-08-21 16:31:27,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-21 16:31:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 109 proven. 85 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-08-21 16:31:27,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090449841] [2020-08-21 16:31:27,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:27,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:31:27,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961434085] [2020-08-21 16:31:27,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:31:27,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:27,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:31:27,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:31:27,420 INFO L87 Difference]: Start difference. First operand 99 states and 133 transitions. Second operand 11 states. [2020-08-21 16:31:27,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:27,684 INFO L93 Difference]: Finished difference Result 188 states and 266 transitions. [2020-08-21 16:31:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 16:31:27,685 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-21 16:31:27,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:27,687 INFO L225 Difference]: With dead ends: 188 [2020-08-21 16:31:27,687 INFO L226 Difference]: Without dead ends: 101 [2020-08-21 16:31:27,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:31:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-08-21 16:31:27,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2020-08-21 16:31:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 16:31:27,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions. [2020-08-21 16:31:27,708 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 136 [2020-08-21 16:31:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:27,710 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 130 transitions. [2020-08-21 16:31:27,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:31:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions. [2020-08-21 16:31:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-21 16:31:27,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:27,713 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:27,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 16:31:27,713 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:27,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:27,714 INFO L82 PathProgramCache]: Analyzing trace with hash 677703633, now seen corresponding path program 2 times [2020-08-21 16:31:27,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:27,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696178804] [2020-08-21 16:31:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:27,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-21 16:31:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 138 proven. 250 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2020-08-21 16:31:28,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696178804] [2020-08-21 16:31:28,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:28,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 16:31:28,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184080362] [2020-08-21 16:31:28,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:31:28,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:28,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:31:28,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:31:28,226 INFO L87 Difference]: Start difference. First operand 98 states and 130 transitions. Second operand 14 states. [2020-08-21 16:31:28,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:28,820 INFO L93 Difference]: Finished difference Result 224 states and 343 transitions. [2020-08-21 16:31:28,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-21 16:31:28,821 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 177 [2020-08-21 16:31:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:28,824 INFO L225 Difference]: With dead ends: 224 [2020-08-21 16:31:28,824 INFO L226 Difference]: Without dead ends: 131 [2020-08-21 16:31:28,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-08-21 16:31:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-08-21 16:31:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 114. [2020-08-21 16:31:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-21 16:31:28,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 154 transitions. [2020-08-21 16:31:28,843 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 154 transitions. Word has length 177 [2020-08-21 16:31:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:28,844 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 154 transitions. [2020-08-21 16:31:28,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:31:28,844 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 154 transitions. [2020-08-21 16:31:28,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-08-21 16:31:28,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:28,847 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:28,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 16:31:28,848 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:28,848 INFO L82 PathProgramCache]: Analyzing trace with hash 307857833, now seen corresponding path program 3 times [2020-08-21 16:31:28,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:28,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450899343] [2020-08-21 16:31:28,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:28,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:31:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 786 backedges. 45 proven. 260 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2020-08-21 16:31:29,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450899343] [2020-08-21 16:31:29,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:29,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:31:29,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958450013] [2020-08-21 16:31:29,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:31:29,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:31:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:31:29,180 INFO L87 Difference]: Start difference. First operand 114 states and 154 transitions. Second operand 11 states. [2020-08-21 16:31:29,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:29,470 INFO L93 Difference]: Finished difference Result 244 states and 371 transitions. [2020-08-21 16:31:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 16:31:29,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 177 [2020-08-21 16:31:29,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:29,475 INFO L225 Difference]: With dead ends: 244 [2020-08-21 16:31:29,475 INFO L226 Difference]: Without dead ends: 240 [2020-08-21 16:31:29,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:31:29,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-08-21 16:31:29,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220. [2020-08-21 16:31:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-21 16:31:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 331 transitions. [2020-08-21 16:31:29,500 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 331 transitions. Word has length 177 [2020-08-21 16:31:29,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:29,501 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 331 transitions. [2020-08-21 16:31:29,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:31:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 331 transitions. [2020-08-21 16:31:29,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-08-21 16:31:29,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:29,506 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 18, 18, 17, 16, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:29,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 16:31:29,507 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:29,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:29,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1318955698, now seen corresponding path program 4 times [2020-08-21 16:31:29,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:29,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436198007] [2020-08-21 16:31:29,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 16:31:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 16:31:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 16:31:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:29,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:29,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2032 backedges. 167 proven. 362 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2020-08-21 16:31:30,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436198007] [2020-08-21 16:31:30,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:30,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 16:31:30,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747640488] [2020-08-21 16:31:30,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 16:31:30,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:30,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 16:31:30,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-21 16:31:30,005 INFO L87 Difference]: Start difference. First operand 220 states and 331 transitions. Second operand 11 states. [2020-08-21 16:31:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:30,333 INFO L93 Difference]: Finished difference Result 429 states and 677 transitions. [2020-08-21 16:31:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 16:31:30,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 274 [2020-08-21 16:31:30,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:30,338 INFO L225 Difference]: With dead ends: 429 [2020-08-21 16:31:30,339 INFO L226 Difference]: Without dead ends: 225 [2020-08-21 16:31:30,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-08-21 16:31:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-08-21 16:31:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2020-08-21 16:31:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-08-21 16:31:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 316 transitions. [2020-08-21 16:31:30,365 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 316 transitions. Word has length 274 [2020-08-21 16:31:30,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:30,366 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 316 transitions. [2020-08-21 16:31:30,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 16:31:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 316 transitions. [2020-08-21 16:31:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-08-21 16:31:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:30,375 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 17, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:30,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 16:31:30,376 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1614185823, now seen corresponding path program 5 times [2020-08-21 16:31:30,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:30,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043336681] [2020-08-21 16:31:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:30,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:31:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:31,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 16:31:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2216 backedges. 94 proven. 558 refuted. 0 times theorem prover too weak. 1564 trivial. 0 not checked. [2020-08-21 16:31:31,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043336681] [2020-08-21 16:31:31,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:31,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 16:31:31,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151669974] [2020-08-21 16:31:31,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 16:31:31,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:31,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 16:31:31,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:31:31,254 INFO L87 Difference]: Start difference. First operand 222 states and 316 transitions. Second operand 12 states. [2020-08-21 16:31:31,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:31,611 INFO L93 Difference]: Finished difference Result 469 states and 720 transitions. [2020-08-21 16:31:31,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-21 16:31:31,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 286 [2020-08-21 16:31:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:31,618 INFO L225 Difference]: With dead ends: 469 [2020-08-21 16:31:31,618 INFO L226 Difference]: Without dead ends: 465 [2020-08-21 16:31:31,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-08-21 16:31:31,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-08-21 16:31:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 445. [2020-08-21 16:31:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-21 16:31:31,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 682 transitions. [2020-08-21 16:31:31,655 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 682 transitions. Word has length 286 [2020-08-21 16:31:31,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:31,655 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 682 transitions. [2020-08-21 16:31:31,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 16:31:31,655 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 682 transitions. [2020-08-21 16:31:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2020-08-21 16:31:31,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:31,663 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 22, 21, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 9, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:31,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 16:31:31,663 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:31,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1485391483, now seen corresponding path program 6 times [2020-08-21 16:31:31,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:31,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365351420] [2020-08-21 16:31:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:31,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:31:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 16:31:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-08-21 16:31:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3769 backedges. 297 proven. 795 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2020-08-21 16:31:32,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365351420] [2020-08-21 16:31:32,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:32,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-21 16:31:32,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360174020] [2020-08-21 16:31:32,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 16:31:32,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:32,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 16:31:32,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-08-21 16:31:32,936 INFO L87 Difference]: Start difference. First operand 445 states and 682 transitions. Second operand 14 states. [2020-08-21 16:31:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:33,536 INFO L93 Difference]: Finished difference Result 924 states and 1512 transitions. [2020-08-21 16:31:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 16:31:33,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 368 [2020-08-21 16:31:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:33,556 INFO L225 Difference]: With dead ends: 924 [2020-08-21 16:31:33,556 INFO L226 Difference]: Without dead ends: 493 [2020-08-21 16:31:33,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2020-08-21 16:31:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-08-21 16:31:33,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 439. [2020-08-21 16:31:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-08-21 16:31:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 658 transitions. [2020-08-21 16:31:33,607 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 658 transitions. Word has length 368 [2020-08-21 16:31:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:33,607 INFO L479 AbstractCegarLoop]: Abstraction has 439 states and 658 transitions. [2020-08-21 16:31:33,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 16:31:33,608 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 658 transitions. [2020-08-21 16:31:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-08-21 16:31:33,618 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:33,619 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 26, 25, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 11, 9, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:33,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 16:31:33,619 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:33,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:33,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1740376526, now seen corresponding path program 7 times [2020-08-21 16:31:33,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:33,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326852781] [2020-08-21 16:31:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:33,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:31:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:33,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-21 16:31:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:34,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:31:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-08-21 16:31:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-21 16:31:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:31:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 16:31:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 16:31:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-08-21 16:31:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 16:31:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-21 16:31:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:31:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5369 backedges. 1102 proven. 902 refuted. 0 times theorem prover too weak. 3365 trivial. 0 not checked. [2020-08-21 16:31:35,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326852781] [2020-08-21 16:31:35,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 16:31:35,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-21 16:31:35,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080290571] [2020-08-21 16:31:35,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-21 16:31:35,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:31:35,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-21 16:31:35,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-08-21 16:31:35,199 INFO L87 Difference]: Start difference. First operand 439 states and 658 transitions. Second operand 22 states. [2020-08-21 16:31:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:31:36,181 INFO L93 Difference]: Finished difference Result 1181 states and 2195 transitions. [2020-08-21 16:31:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-08-21 16:31:36,182 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 436 [2020-08-21 16:31:36,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:31:36,200 INFO L225 Difference]: With dead ends: 1181 [2020-08-21 16:31:36,200 INFO L226 Difference]: Without dead ends: 756 [2020-08-21 16:31:36,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=232, Invalid=1408, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 16:31:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2020-08-21 16:31:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 676. [2020-08-21 16:31:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 676 states. [2020-08-21 16:31:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1086 transitions. [2020-08-21 16:31:36,276 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1086 transitions. Word has length 436 [2020-08-21 16:31:36,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:31:36,277 INFO L479 AbstractCegarLoop]: Abstraction has 676 states and 1086 transitions. [2020-08-21 16:31:36,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-21 16:31:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1086 transitions. [2020-08-21 16:31:36,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2020-08-21 16:31:36,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:31:36,285 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 27, 27, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 11, 10, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:31:36,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 16:31:36,285 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:31:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:31:36,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1326629730, now seen corresponding path program 8 times [2020-08-21 16:31:36,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:31:36,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121837225] [2020-08-21 16:31:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:31:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:31:36,455 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:31:36,455 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:31:36,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 16:31:36,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:31:36 BoogieIcfgContainer [2020-08-21 16:31:36,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:31:36,550 INFO L168 Benchmark]: Toolchain (without parser) took 15366.80 ms. Allocated memory was 137.9 MB in the beginning and 638.1 MB in the end (delta: 500.2 MB). Free memory was 101.2 MB in the beginning and 585.5 MB in the end (delta: -484.4 MB). Peak memory consumption was 521.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:31:36,554 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 16:31:36,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.68 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:31:36,555 INFO L168 Benchmark]: Boogie Preprocessor took 112.19 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 180.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:31:36,556 INFO L168 Benchmark]: RCFGBuilder took 274.11 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 166.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-08-21 16:31:36,556 INFO L168 Benchmark]: TraceAbstraction took 14691.50 ms. Allocated memory was 201.3 MB in the beginning and 638.1 MB in the end (delta: 436.7 MB). Free memory was 166.2 MB in the beginning and 585.5 MB in the end (delta: -419.4 MB). Peak memory consumption was 522.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:31:36,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.68 ms. Allocated memory is still 137.9 MB. Free memory was 100.7 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.19 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.2 MB in the beginning and 180.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 274.11 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 166.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14691.50 ms. Allocated memory was 201.3 MB in the beginning and 638.1 MB in the end (delta: 436.7 MB). Free memory was 166.2 MB in the beginning and 585.5 MB in the end (delta: -419.4 MB). Peak memory consumption was 522.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 8; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 21 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.5s, OverallIterations: 20, TraceHistogramMax: 34, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 607 SDtfs, 711 SDslu, 3178 SDs, 0 SdLazy, 4192 SolverSat, 561 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1070 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=676occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 19 MinimizatonAttempts, 251 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 3010 NumberOfCodeBlocks, 3010 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 2528 ConstructedInterpolants, 0 QuantifiedInterpolants, 908322 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 2 PerfectInterpolantSequences, 13198/16952 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...